using async and pointopoint options together
Hi All, Does udpcast currently allow using async and pointopoint options together ? That is, I want to specify the unicast address of the participant manually from the command line. I noticed that the same question was raised in last January, 2009, and the answer was "not -yet- supported": http://udpcast.linux.lu/pipermail/udpcast/2009-January/000956.html Thanks.
Selçuk Cevher wrote:
Hi All,
Does udpcast currently allow using async and pointopoint options together ?
That is, I want to specify the unicast address of the participant manually from the command line.
I noticed that the same question was raised in last January, 2009, and the answer was "not -yet- supported":
http://udpcast.linux.lu/pipermail/udpcast/2009-January/000956.html
Thanks.
Actually, it is supported, albeit roundabout way: you simply specify the pointopoint address as a data address (-m option), and drop the -pointopoint option: udp-sender --fec 8x8 --async src2 -m 192.168.1.5 --max-bitrate 8m This will send to the unicast address 192.168.1.5 in async mode. Regards, Alain
But it still requires at least one connection from the udp-receiver clients, doesn't it ? Can I force udp-sender not to wait for at least one connection from the clients without modifying the source code ? or Do I have to modify it ? On Tue, Sep 1, 2009 at 1:07 AM, Alain Knaff <alain@knaff.lu> wrote:
Selçuk Cevher wrote:
Hi All,
Does udpcast currently allow using async and pointopoint options together ?
That is, I want to specify the unicast address of the participant manually from the command line.
I noticed that the same question was raised in last January, 2009, and the answer was "not -yet- supported":
http://udpcast.linux.lu/pipermail/udpcast/2009-January/000956.html
Thanks.
Actually, it is supported, albeit roundabout way: you simply specify the pointopoint address as a data address (-m option), and drop the -pointopoint option:
udp-sender --fec 8x8 --async src2 -m 192.168.1.5 --max-bitrate 8m
This will send to the unicast address 192.168.1.5 in async mode.
Regards,
Alain
On 09/01/09 07:51, Selçuk Cevher wrote:
But it still requires at least one connection from the udp-receiver clients, doesn't it ?
Can I force udp-sender not to wait for at least one connection from the clients without modifying the source code ? or Do I have to modify it ?
On Tue, Sep 1, 2009 at 1:07 AM, Alain Knaff <alain@knaff.lu> wrote:
Async mode in unidirectional, there are no connections from clients needed. Regards, Alain
I have one more question. Does udp-receiver provide an option to specify a specific IP address to listen on ? I am asking this because I want to try udp-receiver with some application other than udp-sender on the sending side. On Tue, Sep 1, 2009 at 10:23 AM, Alain Knaff <alain@knaff.lu> wrote:
On 09/01/09 07:51, Selçuk Cevher wrote:
But it still requires at least one connection from the udp-receiver clients, doesn't it ?
Can I force udp-sender not to wait for at least one connection from the clients without modifying the source code ? or Do I have to modify it ?
On Tue, Sep 1, 2009 at 1:07 AM, Alain Knaff <alain@knaff.lu> wrote:
Async mode in unidirectional, there are no connections from clients needed.
Regards,
Alain
Selçuk Cevher wrote:
I have one more question.
Does udp-receiver provide an option to specify a specific IP address to listen on ?
You can specify an address to use to listen for the HELLO packet (--mcast-rdv-address option), which itself will then contain a suggested address for the multicast transfer. If your machine has more than one ethernet card, you may also pick which card to use using the -i option. This influences the unicast adress that the receiver uses. Regards, Alain
I am asking this because I want to try udp-receiver with some application other than udp-sender on the sending side.
On Tue, Sep 1, 2009 at 10:23 AM, Alain Knaff <alain@knaff.lu> wrote:
On 09/01/09 07:51, Selçuk Cevher wrote:
But it still requires at least one connection from the udp-receiver clients, doesn't it ?
Can I force udp-sender not to wait for at least one connection from the clients without modifying the source code ? or Do I have to modify it ?
On Tue, Sep 1, 2009 at 1:07 AM, Alain Knaff <alain@knaff.lu> wrote: Async mode in unidirectional, there are no connections from clients needed.
Regards,
Alain
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You can specify an address to use to listen for the HELLO packet (--mcast-rdv-address option), which itself will then contain a suggested address for the multicast transfer.
But there won't be any HELLO message coming from the sending side since the sender is another application other than udp-sender. Does it mean that sending side should provide HELLO messages with the same format as udp-sender ?
If your machine has more than one ethernet card, you may also pick which card to use using the -i option. This influences the unicast adress that the receiver uses.
As far as I know, by default, udp-receiver listens for its unicast address as well. Is udp-receiver capable of listening every UDP packet coming to its port numbered 9000 without expecting any HELLO message from the other side ? Thanks.
Selçuk Cevher wrote:
You can specify an address to use to listen for the HELLO packet (--mcast-rdv-address option), which itself will then contain a suggested address for the multicast transfer.
But there won't be any HELLO message coming from the sending side since the sender is another application other than udp-sender. Does it mean that sending side should provide HELLO messages with the same format as udp-sender ?
Yes, obviously. It's the same thing as with ftp: If your ftp client does not know how to handle control and data connection, it can't connect to the server...
If your machine has more than one ethernet card, you may also pick which card to use using the -i option. This influences the unicast adress that the receiver uses.
As far as I know, by default, udp-receiver listens for its unicast address as well. Is udp-receiver capable of listening every UDP packet coming to its port numbered 9000 without expecting any HELLO message from the other side ?
Thanks.
No, the HELLO packet is an integral part of the protocol. Just like ftp can't do without a control connection, udpcast can't do without HELLO. Regards, Alain
participants (2)
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Alain Knaff -
Selçuk Cevher